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Letters Pam No. 98,915, datedJanua/ry 18, 1870.

BASE-BURNING- STOVE.

The Schedule referred to in these Letters Patent and making part of thesame.

To all whom it may concern.-

" Be it known that I, NATHANIEL A. Bovxcrosr, of the city, county, andState of New York, have in- I vented a new and useful Improvement inBase-Burning Stoves; and I do hereby. declare thefollowin'g to be afull, clear, and exact description thereof, which will enable thoseskilled in the art tomake and use the same, reference being, had to theaccompanying drawing, forming part of this specification, in whichdrawing- Figure l is a vertical central section of my improved stove.

Figure 2 is a horizontal section.

Similar letters indicate corresponding parts.

This invention is adapted, particularly, to that class of base-burningor reservoirstoves known as fire-place stoves or heaters, and to otherreservoir-stoves which have only a part of their exterior surfacesexposed to view, as where they are set in a fire-place or recess, or

near to a wall, so that there is only a narrow space left behind thestove. V i

This invention consists in so connecting the reservoir of a base-burningstove with the fire-pot, that the combustion-chamber is, in part, shutoff from the fire. The letterA designates the exterior wall or cylinder.

'of a base-burning fire-place stove.

annular space, D, commonly called a combustion chamber, into which enterthe hot gases and products of combustion from the fire, i

' I have found in stoves of this class, when made with the reservoirsuspended entirely free, and disconnected from the fire-pot, (as nowconstructed,) and setin a fire-place or recess, where some parts areenclosed or confined therein, that the reservoir, at the. place oppositeor adjoining to the confined parts, is liable to be burned out, whilethe rest of the reservoir, opposite or adjoining to those parts of thestove which are exposed to the air of the room, remains unimpaired. Iattribute this result to the confinement of such retired parts of thestove, in which position they cannot radiate their heat freely out intospace, as is thecase with the unconfined parts of the stove; while thegenerationof heat is as active in such confined parts of the stove as inthe unconfined parts, the gases and products of combustion from the fireentering the combustionchamber on all sides alike, to as great a degreeon the side where the radiation is slow or inactive as on the side whereit is active.

It istrue, that in fire-place heaters, the outer air has access to the.confined part of the stove, in orderthat it may become warmed before itis allowed to ascend to distant apartments, but this circumstance doesnot prevent the evil, perhaps because the incoming air is not sufiicientin quautity to carryofi? the excess of heat. v

This injury could be prevented by moving the stove out to an openposition, where all parts of the stove would be equally liable to partwith heat by radiation, but. to do this would be to do away withfire-place stoves.

My invention overcomes the'difi'iculty, without interfering with theproper function of the stove as a fire-place stove or heater.

In carrying out my invention, I connect the bottom edge of thefuel-reservoir B with the fire-brick or'liuing of the fire-pot, alongthe part which is opposite to the confined or enclosed portion of thestove,- so as to close the bottom of the combustion-chamber, or annularspace D, along that portion. This connection is marked E, and, in thisexample of my invention, I have made it by thickening the wall or liningF, of the firepot, at that place, causing it to project inward for thedistance required, until it comes under the edge of the reservoir, sothat the rear part of the reservoir and the rear part of the fire-potbecome connected,"and

form continuations of each other, so as to prevent the gases and flamegoing from the back part of the fire directly into the back part of thecombustion-chamber D, and to cause said gases and flame to be deflectedtoward those parts of the combustion-chamber which are in front ofthe'connection E, thereby causing the most active combustion to takeplace forward of the confined part of the stove, and relieving suchconfined part from being heated to the same degree as the uncoveredparts. y

It may not at all times be convenient to make this joint absolutelyair-tight, but it is intended to make the connection between the bottomof the reservoir, and its point of junction with the lining, practicallyclose.

What I claim as new, and desire to secure by Letters Patent, is-

The connection E, of the reservoir B, in base-burning stoves, with thefire-pot F, substantially as, de-' scribed, whereby thecombustion-chamber D is shut 01f from the fire.

' N. A. BOYN'TON. \Vitnesses H. G. HULL, J. VAN SANTVOORD.

